[ac7d5ef0] | 1 | /* |
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| 2 | * This routine returns control to 135Bug. |
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| 3 | * |
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[08311cc3] | 4 | * COPYRIGHT (c) 1989-1999. |
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[ac7d5ef0] | 5 | * On-Line Applications Research Corporation (OAR). |
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| 6 | * |
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[98e4ebf5] | 7 | * The license and distribution terms for this file may be |
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| 8 | * found in the file LICENSE in this distribution or at |
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[c499856] | 9 | * http://www.rtems.org/license/LICENSE. |
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[ac7d5ef0] | 10 | */ |
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| 11 | |
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| 12 | #include <bsp.h> |
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[3a1d9c6] | 13 | #include <bsp/bootcard.h> |
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[bab5ff96] | 14 | #include <rtems/zilog/z8036.h> |
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[ac7d5ef0] | 15 | |
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[66402ef2] | 16 | void start(void); |
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[3efa0345] | 17 | |
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[66402ef2] | 18 | static rtems_isr bsp_return_to_monitor_trap(rtems_vector_number ignored) |
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[ac7d5ef0] | 19 | { |
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| 20 | register volatile void *start_addr; |
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| 21 | |
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[66402ef2] | 22 | m68k_set_vbr( 0 ); /* restore 135Bug vectors */ |
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| 23 | __asm__ volatile( "trap #15" ); /* trap to 135Bug */ |
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| 24 | __asm__ volatile( ".short 0x63" ); /* return to 135Bug (.RETURN) */ |
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| 25 | /* restart program */ |
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[ac7d5ef0] | 26 | start_addr = start; |
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| 27 | |
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[5e858ba7] | 28 | __asm__ volatile ( "jmp %0@" : "=a" (start_addr) : "0" (start_addr) ); |
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[ac7d5ef0] | 29 | } |
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| 30 | |
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| 31 | #define TIMER 0xfffb0000 |
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| 32 | |
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[a052181] | 33 | void bsp_fatal_extension( |
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| 34 | rtems_fatal_source source, |
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| 35 | bool is_internal, |
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| 36 | rtems_fatal_code error |
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[f4adc0d1] | 37 | ) |
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[ac7d5ef0] | 38 | { |
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| 39 | Z8x36_WRITE( TIMER, MASTER_INTR, 0x62 ); /* redo timer */ |
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| 40 | Z8x36_WRITE( TIMER, CT1_MODE_SPEC, 0x00 ); |
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| 41 | Z8x36_WRITE( TIMER, MASTER_CFG, 0xf4 ); |
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| 42 | Z8x36_WRITE( TIMER, CT1_CMD_STATUS, 0x00 ); |
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| 43 | |
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| 44 | M68Kvec[ 45 ] = bsp_return_to_monitor_trap; /* install handler */ |
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[5e858ba7] | 45 | __asm__ volatile( "trap #13" ); /* insures SUPV mode */ |
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[ac7d5ef0] | 46 | } |
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